diff --git a/bookstack/Dockerfile b/bookstack/Dockerfile
index 805a9c2..2db60d0 100644
--- a/bookstack/Dockerfile
+++ b/bookstack/Dockerfile
@@ -32,7 +32,7 @@ RUN \
         composer=2.1.9-r0 \
     \
     && curl -J -L -o /tmp/bookstack.tar.gz \
-        https://github.com/BookStackApp/BookStack/archive/v21.11.1.tar.gz \
+        https://github.com/BookStackApp/BookStack/archive/v21.11.3.tar.gz \
     &&  mkdir -p /var/www/bookstack \
     && tar zxf /tmp/bookstack.tar.gz -C \
         /var/www/bookstack --strip-components=1 \